Rotary kinetic fluid motors or pumps – Bearing – seal – or liner between runner portion and static part – Between blade edge and static part
Patent
1994-10-19
1996-03-26
Look, Edward K.
Rotary kinetic fluid motors or pumps
Bearing, seal, or liner between runner portion and static part
Between blade edge and static part
4151736, 416189, 29888021, 2988921, 2988922, 298897, 277 53, F01D 520, F01D 1108
Patent
active
055015735
ABSTRACT:
A segmented seal assembly for retrofitting existing turbine units and the like. In accordance with one aspect of the present invention, the assembly comprises a plurality of semicircular segments disposed between a turbine casing and moving blades of a turbine shaft. Each segment is mounted by threaded fasteners to at least one inner surface of the unit and configured for cooperation with the same. On inner surfaces of the segments are at least two rows of seal teeth, disposed facially with the moving blades. Upon assembly of the segments into a seal ring, fluid flow over the moving blades is limited. Cover band elements layered upon outer surfaces of the moving blades prevent damage to the seal teeth and limit fluid flow over the blades.
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patent: 2970808 (1961-02-01), Coppa
patent: 3000552 (1961-09-01), Cooper, Jr. et al.
patent: 3501246 (1970-03-01), Hickey
patent: 3572968 (1971-03-01), Musick
patent: 3702221 (1972-11-01), Ortolano
patent: 3867060 (1975-02-01), Huber
patent: 4816213 (1989-03-01), Groenendaal, Jr.
patent: 5056989 (1991-10-01), Turner et al.
Look Edward K.
Steam Specialties, Inc.
Verdier Christopher
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